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Earplug View Drop Down
Old Croc
Old Croc


Joined: 03 January 2012
Location: Europe
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Points: 6765 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Earplug Quote  Post ReplyReply Direct Link To This Post Posted: 30 May 2022 at 5:12pm
Originally posted by service dept Steve service dept Steve wrote:

I wonder what a pulled, used but tested j50 or k135 is worth these days, us old boys have lots of strange stock tucked away


Haha, yes. I just sold a load of old (rescued) Crown devices to a guy here. C4751, C6492 as well as some rescued MJ15015/16 and MJ15022/23. The guy said that he prefered using old, used transistors to the new stuff that risked being fake.
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Old Croc
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Joined: 30 January 2010
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Points: 2026 		Post Options Post Options   Thanks (0) Thanks(0)   Quote service dept Steve Quote  Post ReplyReply Direct Link To This Post Posted: 30 May 2022 at 6:01pm
Originally posted by Earplug Earplug wrote:

Originally posted by service dept Steve service dept Steve wrote:

I wonder what a pulled, used but tested j50 or k135 is worth these days, us old boys have lots of strange stock tucked away


Haha, yes. I just sold a load of old (rescued) Crown devices to a guy here. C4751, C6492 as well as some rescued MJ15015/16 and MJ15022/23. The guy said that he prefered using old, used transistors to the new stuff that risked being fake.


Sad but true, I pay more for used transistors than for new ones for that very reason. I'm not sure that the crown ones were great in period but certainly 22/23/24/25s are always in my wish list
We are not "They", We are "The others"http://www.servicedept.co.uk -
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Sergio B View Drop Down
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Joined: 29 May 2022
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Points: 13 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Sergio B Quote  Post ReplyReply Direct Link To This Post Posted: 30 May 2022 at 8:43pm
sorry, .. but at this point it is worth changing the configuration of the amplifiers with the new 2SJ162 2SK1058 and modifying the PCBs with side connection

Edited by Sergio B - 30 May 2022 at 8:44pm
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Example: 2sj50



Edited by Sergio B - 30 May 2022 at 9:08pm
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Edited by Sergio B - 30 May 2022 at 9:11pm
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MOSFET replacement queston. K135 and J50 with BUZ900/BUZ905 vs BUZ901/BUZ906
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Earplug View Drop Down
Old Croc
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Joined: 03 January 2012
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Points: 6765 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Earplug Quote  Post ReplyReply Direct Link To This Post Posted: 31 May 2022 at 7:00am
Originally posted by Sergio B Sergio B wrote:

sorry, .. but at this point it is worth changing the configuration of the amplifiers with the new 2SJ162 2SK1058 and modifying the PCBs with side connection


Can you still get (real) J162/K1058's? I have used them and they were fine, but I think no longer fabricated.

BUT - replaced by the ECX10N/P20 range which is available. But again, not cheap.
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Points: 13 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Sergio B Quote  Post ReplyReply Direct Link To This Post Posted: 02 June 2022 at 3:02pm
Originally posted by Earplug Earplug wrote:


Can you still get (real) J162/K1058's? I have used them and they were fine, but I think no longer fabricated.

BUT - replaced by the ECX10N/P20 range which is available. But again, not cheap.




but the J162 / K1058 are still found
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Points: 13 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Sergio B Quote  Post ReplyReply Direct Link To This Post Posted: 02 June 2022 at 3:06pm
Originally posted by simonp1100 simonp1100 wrote:

Here is an updated version of the soft / start PCB




kindly could you post the wiring diagram with the values ​​of the soft / start board components

thanks
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